Under the Alchemy proposal, Long and Creffield would have been replaced, with former Gala Coral and De Vere boss Carl Leaver taking the chairman role.
Earlier this year, LSL Property, owner of Your Move, abandoned a merger plan with Countrywide.
Countrywide has debts of £92 million and has been closing branches despite the property market being healthy thanks to stamp duty reliefs.
Countrywide shareholder Catalist Partners was among those opposing the Alchemy deal, which would have involved a 135p a share proposed share placing resulting in the private equity firm owning a controlling stake in the business.
Catalist has deemed the transaction “unnecessary, ill-judged and dilutive”.
David Livesey, chief executive of Connells, said yesterday that Countrywide had been "repeatedly promised jam tomorrow and it has never been delivered.
"Countrywide needs new ownership, not yet another speculative scheme that is based on hope rather than experience.